The cause of the massive blackout on Monday in many areas of Dalian, Liaoning, has been found, officials say: A wildcat broke into a transformer substation to warm itself.

Repairmen were called to help after many residents lost power.

Checking the substation, repairmen saw a wildcat lying between two magnetic binding posts to get warm.

After being surprised that it was uninjured, they had to drive the animal away and repaired a group of fuses.

(Dalian Evening News)